Question

For a particle moving along a circular path with a constant speed, the acceleration is constant in ______.

Options

• magnitude

• direction

• both magnitude and direction

• neither magnitude nor direction

Answer 1

For a particle moving along a circular path with a constant speed, the acceleration is constant in magnitude.

Explanation:

In uniform circular motion,

a = `v^2/r`

Since v and r are constant, the magnitude of acceleration remains constant. Its direction changes continuously because it always acts towards the centre of the circular path.